One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,7,4,6)(9,10,14,16)(11,12,15,13)(17,18,21,26)(19,20,29,24)(22,28,23,27)(25,31,32,30)(1,3,5,4)(2,6,8,7)(9,11)(10,12)(13,16)(14,15)(17,19,21,29)(18,24,26,20)(22,25,23,32)(27,31,28,30)(10,15)(11,16)(12,13)(17,20,21,24)(18,25,26,32)(19,28,29,27)(22,31,23,30)(1,4,5,3)(2,7,8,6)(9,12,14,13)(10,15,16,11)(18,26)(20,24)(27,28)(30,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.